Who thinks "respond with a gun" is a reasonable response to "too much noise in the upstairs apartment?
I had a couple downstairs apartments during my college years. Frequently the upstairs noise was enough to "disrupt" us downstairs. Most times we accepted it as "price of living downstairs". Though I will admit to serenading an apparently amorous couple with a bad rendition* of "Black Dog" after being woke up at "way-too-dark-thirty" for their quickie.
But firearms never entered even in to the thought of the equation.
Deeper research suggests the shooter was hit by a ricochet, but it doesn't stop the
* I have an electric guitar, but I try not to inflict my playing upon others. There have been special exceptions.
Guns are never a solution to noise complaints!